C# Populate a treeview with Dataset

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C#

This is what i think the code is but doesn't work

DataSet1 newdataset = new DataSet1();
           treeView1.Nodes.Add(newdataset.Dock_1.Rows.ToString());

and on the dataset I have added

Datatable called NUMBERS
And in that table I added a column called DataColumn1

on the form load the treeview1 nodes should look like this

NUMBERS
+DataColumn1

I was wondering if anyone can help me achieve this?